Guest Stars Orla Russell as Poppy Chris Jenks as Callum Barker Amir El-Masry as Daniel Ramsay Nebras Jamali as Ali Bilali Jonathan Ajayi as Wes Harper Oscar Salem as Sam Kader David Elliot as Ross Sutherland Shannon Hayes as Nicole Lawson Tommy Sim'aan as Firas Zaman Steven Elder as Derek McCabe Angus Yellowlees as Clothier Laura Miller as News Presenter Kirsty Besterman as Intelligence Officer Wright Kim Allan as Paramedic Fraser Rosa Escoda as Saskia Jumaan Zizzari as Layla